CN100413994C - Nano micrometer modefied wear resistant erosion resistant thermal coated tubular wire - Google Patents
Nano micrometer modefied wear resistant erosion resistant thermal coated tubular wire Download PDFInfo
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- CN100413994C CN100413994C CNB2006100121779A CN200610012177A CN100413994C CN 100413994 C CN100413994 C CN 100413994C CN B2006100121779 A CNB2006100121779 A CN B2006100121779A CN 200610012177 A CN200610012177 A CN 200610012177A CN 100413994 C CN100413994 C CN 100413994C
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Abstract
The present invention relates to a nano micrometer modified wear and erosion resisting hot spraying tubular wire which belongs to the technical field of surface engineering in material processing engineering. The present invention relates to a hot spraying tubular wire which uses ferrum or nickel as a casing of the tubular wire. Components of a powder core comprise the following mass percentage contents: 45 to 60% of high carbon ferro-chrome, 10 to 20% of nickel, 4 to 10% of ferric silicon, 5 to 10% of ferroboron, 10 to 15% of Cr3C2 (or TiB2, or TiC), 5 to 15% of micrometer TiB2 and 5 to 15% of nanometer Al2 O3. A drug core also contains the following one or a plurality of kinds of components: 1 to 3% of wollastonite, 2 to 5% of ZrO2 and 5 to 15% of TiO2. The present invention is mainly applied to wear and erosion resisting surfaces of components and parts, such as fan blades, power station boiler pipe walls, the class of shafts, etc., and nano micrometer modified tubular wires are sprayed by adopting a flame spraying or arc spraying method to make the surfaces of the components and parts form wear and erosion resisting coating layers which can improve the service life of the components and parts.
Description
Technical field
The invention belongs to the Surface Engineering field in the Materials Processing Engineering, is by adding the necessary powdered alloy and micron powder modification of receiving, and prepares a kind of well behaved ceramic on metal complex abrasion-proof erosion resistance tubular filament material of receiving micron modification.Be mainly used in industrial circles such as wear-resisting, erosion resistance and high-temperature oxidation resistant.
Background technology
Wearing and tearing comprise and a series of complicated physical process also comprise chemical process sometimes that wear form has: abrasive wear, adhesive wear, corrosive wear, contact fatigue wearing and tearing and erosive wear etc.Though the wearing and tearing and the erosion of material surface take place gradually, the loss that causes is very surprising.Annual because the abrasion loss surpasses 10,000,000,000 marks in the Germany, in U.S. 1 year, the fund that metal cutting tool consumes because of wearing and tearing reaches 40,000,000,000 dollars.Also is huge in China owing to denuding the expense that consumes, because the abrasion of workpiece also may cause sudden failure accidents.Corrosion and wearing and tearing all are the material loss processes that betide surface of the work, and the inefficacy of the parts of other form has many from the surface.Therefore only intensive treatment is carried out on the surface of equipment and component and need not replace that it is anticorrosive to strengthen, abrasion resistance properties is a kind of economical and practical method.
With regard to electric arc spraying and flame plating silk material, metal, alloy wire as: though 45CT, 50Ni/Cr, FeCrAl series etc. have good high-temperature corrosion resistance performance, wear resisting property far can not meet the demands; Pure ceramic coating high rigidity, high temperature resistant, corrosion-resistant and wearing and tearing, but its fragility is bigger, and is heat insulation, can not resist the stress under the shock load, easily brittle failure, peels off.Therefore, the metal/ceramic compound coating will become the developing direction of wear-resistant and high temperature resistant erosion shield coating because of satisfying the corrosion under the high temperature and the working condition requirement of wearing and tearing simultaneously.Characteristics such as the obdurability of characteristic such as high temperature resistant, wear-resistant, corrosion-resistant and metallic substance, workability, conductive and heat-conductive combine, and play an important role in high-tech areas such as aerospace, the energy, electronics, materials.
Purpose of the present invention is exactly that development is a kind of by receiving high abrasion, erosion resistance electric arc spraying or the flame plating tubular filament material of micron modification, is used for preparing iron-based or nickel based metal ceramic composite coating.
Summary of the invention
To receive the micrometer ceramics powder toughness reinforcing in order to solve the toughness problem that the hot spraying metal ceramic composite wire material prepares coating, to add, and makes cermet composite coating densification, the high tenacity of the preparation of electric arc or flame plating tubular filament material, thereby have high wear-resisting and erosive wear resistance.
This receives the hot spraying tubular filament material of micron modification, adopts electric arc spraying or flame spraying method to prepare the ceramic on metal compound coating, for improving the wettability of ceramic phase and metallic matrix, adding alloying element Ni, Cr, B, Si etc.This receives the hot spraying tubular filament material of micron modification, be with iron-based or Ni-based be the tubular filament material crust.
The hot spraying tubular filament material that processing performance provided by the present invention is good is characterized in that, the powder core composition range of tubular filament material parcel is as follows:
High carbon ferro-chrome: required Cr element in the coating is provided, can have improved iron-based and Ni-based and ceramic phase Cr in the coating
3C
2Or TiB
2Or TiB
2/ Al
2O
3Between wettability, the quality percentage composition is 45～60%;
Nickel powder: transition alloy elements in coating, quality percentage composition are 10～20%;
Ferrosilicon: transition alloy elements in coating, quality percentage composition are 4～10%;
Ferro-boron: transition alloy elements in coating, quality percentage composition are 5～10%;
Ceramic phase: in the powder core, add Cr
3C
2(or TiB
2, or TiC) etc. ceramic phase, have very high hardness, the avidity of Cr and oxygen is very strong, can form Cr in the metallic surface during high temperature oxidation
3O
2Film has the good resistance to high temperature oxidation and the ability of thermal etching.Transition ceramic phase or by the spraying thermal process in coating forms other ceramic phase in coating.The adding quality percentage composition of ceramic phase is 10～15%;
Receive a micron modified ceramic powder, improve the density and the toughness of coating, the quality percentage composition is 5～15% microns TiB
2(particle diameter is less than 5 microns), 5～15% nanometer Al
2O
3(particle diameter is a 20-40 nanometer reunion powder).
Also contain following one or more compositions in this powder core: 1～3% wollastonite, 2～5%ZrO
2, 5～15%TiO
2
Preparation method of the present invention adopts prior art, may further comprise the steps:
1. carry out mist projection granulating to receiving the micrometer ceramics powder, make and receive the micrometer ceramics powder and coat metal powder outward, and make the powder after the granulation reach 40-200 order granularity;
2. steel band is rolled into U-shaped, in U-lag, add the medicinal powder of the present invention of the 25-35% that accounts for welding wire gross weight of the present invention;
3. U-lag is healed up, make the medicinal powder parcel wherein,,, make its diameter reach 2.0mm or 3.0mm at last, obtain the finished product by road drawing, tube reducing by wortle.Silk material appearance has tangible metalluster, is beneficial to high speed thermospray wire feed.
Employing is received the iron-based and the Ni-based tubulose Spray Wire of micron modification and is had following performance:
The sintering metal composite wire material particle flight velocity in spraying process of micron modification received is fast, and kinetic energy is big, and coating is coated with 1～2 times of floor height with high base strength than routine.
Compare with conventional silk material, the coating structure densification of preparation, porosity is very low.Coating has good toughness, has abrasive wear resistance and the erosive wear resistance that is coated with 2～3 times of floor heights than routine during in identical hardness or than the low slightly hardness of conventional coating.
Description of drawings:
Fig. 1: tubular filament material operation of rolling synoptic diagram, 1 for cutting out band among the figure, and 2 for rolling band, and 3 for adding powder, and 4 is hot candied.
Fig. 2: thermal spray process particle flight velocity is with the Changing Pattern of spray distance, and X-coordinate is represented spray distance, and the mm of unit, ordinate zou represent the particle flight velocity, the m/s of unit, and 1# is embodiment 1 among the figure, 5# is embodiment 5.
Embodiment:
All embodiment tubular filament materials are all made " FCWM50 medicine core drawing wire machine " by Kunming Heavy Machinery Factory and made: selecting width for use is 8-14mm, and thickness is high quality carbon steel band or the nickel chromium triangle band of 0.25-0.5mm.Earlier it is rolled into U-shaped, adding granularity again in U-lag was the mixed powder of 40-200 mesh sieve, and the filling ratio of medicinal powder (medicinal powder weight accounts for the percentage of welding wire gross weight) is 30-35%.U-lag is healed up, make the medicinal powder parcel wherein.
Base material is selected steel for use No. 20, whole base material mass percent concentrations are that 99.8% acetone cleans before the spraying, and granularity is to carry out electric arc spraying behind the 25 purpose Emery grains sand blasting sand, and blasting pressure is 0.65MPa, spraying equipment is a JZY type arc-spraying machine, and spraying parameter sees Table 1.
Specific embodiments is as follows:
1. select the high-quality low-carbon cold rolling steel band of 14 * 0.3 (width is 14mm, and thickness is 0.3mm) for use, earlier it is rolled into U-shaped.Get high carbon ferro-chrome 340 grams, nickel powder 210 grams, ferrosilicon 20 grams, ferro-boron 140 grams, Cr
3C
2320 grams, the micron TiB after the granulation
240 grams (granularity of the powder of getting is for passing through 40-200 purpose sieve).The various powder of get are put into mixed powder machine mixed 40 minutes, then mixed powder is added in the steel band groove of U-shaped, filling ratio is 33%.U-lag is healed up, make the medicinal powder parcel wherein.Make it pursue drawing, tube reducing then, make its diameter reach 2.0mm at last.Matrix is the 20# steel, whole base material mass percent concentrations are that 99.8% acetone cleans before the spraying, and granularity is to carry out electric arc spraying behind the 25 purpose Emery grains sand blasting sand, and blasting pressure is 0.65MPa, spraying equipment is a JZY type arc-spraying machine, and spraying parameter sees Table 1.
2. select the high-quality low-carbon cold rolling steel band of 14 * 0.3 (width is 14mm, and thickness is 0.3mm) for use, earlier it is rolled into U-shaped.Get high carbon ferro-chrome 340 grams, nickel powder 210 grams, ferrosilicon 20 grams, ferro-boron 140 grams, Cr
3C
2320 grams, the micron TiB after the granulation
2150 grams (granularity of the powder of getting is for passing through 40-200 purpose sieve).The various powder of get are put into mixed powder machine mixed 40 minutes, then mixed powder is added in the steel band groove of U-shaped, filling ratio is 33%.U-lag is healed up, make the medicinal powder parcel wherein.Make it pursue drawing, tube reducing then, make its diameter reach 2.0mm at last.Matrix is the 20# steel, whole base material mass percent concentrations are that 99.8% acetone cleans before the spraying, and granularity is to carry out electric arc spraying behind the 25 purpose Emery grains sand blasting sand, and blasting pressure is 0.65MPa, spraying equipment is a JZY type arc-spraying machine, and spraying parameter sees Table 1.
3. select the high-quality low-carbon cold rolling steel band of 14 * 0.3 (width is 14mm, and thickness is 0.3mm) for use, earlier it is rolled into U-shaped.Get high carbon ferro-chrome 340 grams, nickel powder 210 grams, ferrosilicon 20 grams, ferro-boron 140 grams, Cr
3C
2320 grams, the micron TiB2300 gram (granularity of the powder of getting is for passing through 40-200 purpose sieve) after the granulation.The various powder of get are put into mixed powder machine mixed 40 minutes, then mixed powder is added in the steel band groove of U-shaped, filling ratio is 33%.U-lag is healed up, make the medicinal powder parcel wherein.Make it pursue drawing, tube reducing then, make its diameter reach 2.0mm at last.Matrix is the 20# steel, whole base material mass percent concentrations are that 99.8% acetone cleans before the spraying, and granularity is to carry out electric arc spraying behind the 25 purpose Emery grains sand blasting sand, and blasting pressure is 0.65MPa, spraying equipment is a JZY type arc-spraying machine, and spraying parameter sees Table 1.
4. select the high-quality low-carbon cold rolling steel band of 14 * 0.3 (width is 14mm, and thickness is 0.3mm) for use, earlier it is rolled into U-shaped.Get high carbon ferro-chrome 340 grams, nickel powder 210 grams, ferrosilicon 20 grams, ferro-boron 140 grams, TiB
2320 grams, the micron TiB after the granulation
2300 grams (granularity of the powder of getting is for passing through 40-200 purpose sieve).The various powder of get are put into mixed powder machine mixed 40 minutes, then mixed powder is added in the steel band groove of U-shaped, filling ratio is 33%.U-lag is healed up, make the medicinal powder parcel wherein.Make it pursue drawing, tube reducing then, make its diameter reach 2.0mm at last.Matrix is the 20# steel, whole base material mass percent concentrations are that 99.8% acetone cleans before the spraying, and granularity is to carry out electric arc spraying behind the 25 purpose Emery grains sand blasting sand, and blasting pressure is 0.65MPa, spraying equipment is a JZY type arc-spraying machine, and spraying parameter sees Table 1.
5. select the high-quality low-carbon cold rolling steel band of 14 * 0.3 (width is 14mm, and thickness is 0.3mm) for use, earlier it is rolled into U-shaped.Get high carbon ferro-chrome 340 grams, nickel powder 210 grams, ferrosilicon 20 grams, ferro-boron 140 grams, TIB
2320 grams, the nanometer Al after the granulation
2O
3140 grams (granularity of the powder of getting is for passing through 40-200 purpose sieve).The various powder of get are put into mixed powder machine mixed 40 minutes, then mixed powder is added in the steel band groove of U-shaped, filling ratio is 33%.U-lag is healed up, make the medicinal powder parcel wherein.Make it pursue drawing, tube reducing then, make its diameter reach 2.0mm at last.Matrix is the 20# steel, whole base material mass percent concentrations are that 99.8% acetone cleans before the spraying, and granularity is to carry out electric arc spraying behind the 25 purpose Emery grains sand blasting sand, and blasting pressure is 0.65MPa, spraying equipment is a JZY type arc-spraying machine, and spraying parameter sees Table 1.
Carrying out performances such as surface rockwell hardness, microhardness, abrasive wear resistance performance, bonding strength after the spraying tests.Table 2 is surface rockwell hardnesses of coating, and sample is selected 55 * 25 * 5mm for use, and coat-thickness is 0.5mm..Table 3 is microhardness of coating.Table 4 is anchoring strength of coating, and the pulling experiment method of defined is tested among the experimental basis GB GB9796-88, and coat-thickness is 0.3mm..Table 5 is coating abrasive wear resistance The performance test results.
The powder core wire wire feed that obtains among the embodiment is easy, arc stability, and process stabilizing, dust-firing is more abundant, obtains the iron-based ceramic composite coating, and the coatingsurface quality is better.By table 2,3,4,5 as can be seen coating higher hardness and bonding strength are arranged, good abrasion resistance, and cost is low, is mainly used in wear-resisting and high-temperature oxidation resistant erosion resistance field in the industry.
Table 1 electric arc spraying process parameter
| Processing parameter | Flame current A | Arc voltage V | Pressurized air is pressed MPa | Spray distance mm |
| 180-200 | 32-36 | 0.6 | 180 |
The surface hardness test of table 2 coating
Table 3 microhardness of coating test HV
01(appointing at interval, 50 μ m measure 3 points)
| Numbering | 1 |
2 |
3 points | On |
| Embodiment | ||||
| 1 | 530.16 | 515.1 | 546.79 | 530.6833 |
| |
518.31 | 612.86 | 594.61 | 575.26 |
| |
859.29 | 740.2 | 696.11 | 765.2 |
| |
811.2 | 818.04 | 755.2 | 794.8133 |
| |
715.02 | 713.45 | 721.84 | 716.77 |
Table 4 Bond Strength of Coating (3 of silk material of the same race sample preparations)
The abrasive wear resistance performance of table 5 coating
Annotate: table 5 is silk material system wearing and tearing sample A of the same race, B, and three of C test.
Claims (1)
1. one kind by receiving the wear-resisting erosion resistance hot spraying tubular filament material of micron modification, and powder core filling ratio is 30-35%, it is characterized in that, crust is selected iron-based or Ni-based for use, and the powder core composition quality degree of parcel is as follows:
45～60% high carbon ferro-chromes;
10～20% nickel;
4～10% ferrosilicon;
5～10% ferro-borons;
10～15%Cr
3C
2Or TiC;
5～15% particle diameters are less than 5 μ m TiB
2Or particle diameter 20nm～40nmAl
2O
3
Granulation mixes back particle diameter 40～200 orders.
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|---|---|---|---|
| CNB2006100121779A CN100413994C (en) | 2006-06-09 | 2006-06-09 | Nano micrometer modefied wear resistant erosion resistant thermal coated tubular wire |
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|---|---|---|---|
| CNB2006100121779A CN100413994C (en) | 2006-06-09 | 2006-06-09 | Nano micrometer modefied wear resistant erosion resistant thermal coated tubular wire |
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| CN100413994C true CN100413994C (en) | 2008-08-27 |
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